JPH07165211A - Binding tool with holding/releasing mechanism in which steelstrip is inserted, and which holds and releases steel strip - Google Patents

Abstract

PURPOSE: To make overlapped ends of steel straps admit into a strapping tool for strapping in tension in the loop form around a package, retain the overlapped ends therein, apply tension, process interlocking joints by punching and then efficiently operate a retaining and releasing mechanism for releasing the ends by one hand. CONSTITUTION: A strapping tool 10 is provided with a retaining and releasing mechanism in which the overlapped ends of steel straps 12 are made to admit into the strapping tool, and tension is applied by a tension applying mechanism 50 and an operation handle 40 is operated for punching to process interlocking joints on the ends and then the ends are released. In the retaining and releasing mechanism, a leaf 80 is squeezed by one hand in the arrow mark direction as shown in a figure to release the ends, and when the manual squeezing is released, the mechanism is restored to the direction of retaining automatically by the energizing force of a spring.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a series of meshing joints having a meshable shoulder fitted with a looped steel strip that is stretched around a package and punched at the overlap end of the steel strip. The present invention relates to a binding tool for joining bands. The present invention is
(EN) A novel holding / opening mechanism for inserting, holding and releasing overlapping ends of steel strips.

[0002]

2. Description of the Prior Art Bundling tools of the type described above have an actuating handle arranged to be manually swung. The handle is
An input shaft to which the handle is coupled and an output shaft that drives a series of cams through an intermediate gear rotates. The cam drives a series of punches that punch a shoulder that can mate with the overlapping ends of the strip. U.S. Pat. No. 4,825,5
No. 12 (Japanese Patent Laid-Open No. 1-279066) shows a recent example of the steel strip having the series of meshing joints. The above-mentioned type of binding tool is a conversion for converting the swinging rotation of the input shaft into the unidirectional rotation of the output shaft as disclosed in US Pat. No. 5,136,888 (Japanese Patent Laid-Open No. 5-203013). A mechanism may be incorporated.

[0003]

The conventional tying tool is improved in a convenient manner. In particular, the present invention provides a tying tool capable of easily holding and releasing the overlapping end portions of steel strips with one hand.

[0004]

A binding structure for a binding tool, which includes a base extending in the longitudinal direction as a holding and releasing mechanism for overlapping ends of steel strips and defining a recess, and a frame standing upright from the base. It has a latch. The latch is
Put the overlap end in the tool and the closed position where the latch extends into the recess defined by the base to hold the overlap end between the latch and the base and between the hooked end and the frame. A stationary structure is movably mounted so that the latch is selectively movable between an open position where it is displaced from a closed position to release the overlapping end from the tool. The retaining / releasing mechanism further comprises a moving device for moving the latch from the closed position to the open position.

Preferably, the latch has a hooked end and is pivotally mounted to the frame so as to be pivotable between a closed position and an open position, and the moving device is adapted to move from the closed position to the open position. It is arranged to rotate the latch.
Therefore, in the closed position, the hooked end extends into the recess.

Preferably, the moving device comprises a lever pivotally mounted to the frame so as to be pivotable about an axis between a capture position and a release position. The capture position corresponds to the closed position of the latch and the release position corresponds to the open position of the latch. The lever is coupled to the latch in such a manner that pivoting the lever from the capture position to the release position causes pivoting of the latch from the closed position to the open position. The lever is biased to the capture position to bias the latch to the closed position.

Usually, a tying tool of the type described above comprises an actuation handle pivotably mounted on the frame so as to be pivotable between the front and rear limits of the region of pivotal movement. A user who uses one hand when installing the actuation handle in the area of the rear limit can then pivot the lever from the capture position to the release position by gripping the actuation handle and lever and tightening the lever towards the actuation handle. Thus, the handle may advantageously be installed close to the lever.

Preferably, the holding / releasing mechanism further includes a cam member movably mounted on the frame so as to be movable in the longitudinal direction between the forward movement position and the backward movement position. The advanced position corresponds to the capture position of the lever and the closed position of the latch. The retracted position corresponds to the released position of the lever and the opened position of the latch. The lever is coupled to the camming member in such a manner that pivoting the lever from the capture position to the release position causes longitudinal movement of the camming member from the advanced position to the retracted position. The cam member is biased to the forward position so as to bias the lever to the capture position. The camming member pivots the latch from a closed position to an open position during longitudinal movement of the camming member from the advanced position to the retracted position and from the retracted position to the advanced position. It has a cam slot cooperating with the latch to pivot the latch from the open position to the closed position during longitudinal movement.

Preferably, the axis about which the lever is pivotable is the transverse axis and the holding and releasing mechanism is
Further provided is a lateral member spaced from the lateral axis and movable about the lateral axis when the lever is pivoted about the lateral axis. More preferably, the cam member is
The cross member has an end defining a hole extending therethrough, the end moving the cam member from the advanced position to the retracted position during pivoting of the lever from the capture position to the release position. In such a manner, it cooperates with the cross member.

These and other objects, features and advantages of the invention will be apparent from the following description of a preferred embodiment of the invention with reference to the accompanying drawings.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT As shown in the drawings, and particularly in FIGS. 1, 2 and 3, a tying tool 10 of the type described above constitutes a preferred embodiment of the invention. The tying tool 10 mounts a steel strip 12 that is looped around a package 14 and has a series of mating joints 16 having punchable meshable shoulders 18 at the overlapping ends of the steel strip 12. (FIG. 5) used to join the steel strips 12. As shown in FIGS. 4 and 5, the binding tool 10
Inserts the overlap end into the tool 10 and holds the overlap end so as to easily punch a series of matable shoulders 18 into the overlap end, and the overlap end is held in the tool 10. It includes a holding / releasing mechanism 20 for releasing from.

As the overlapping ends of the steel strip 12 are retained by the retention and release mechanism 20, a series of meshable shoulders 18 are then arranged to drive a series of punches 24 (FIG. 3). A series of cams 22 can be punched into the overlap ends. The cam 22 and punch 24 may be substantially similar to the cams and punches used in known tying tools of the type described above.

The cam 22 together with the output shaft 34
Is driven by a conversion mechanism 30 (FIG. 3) that converts swinging rotation of the input shaft 32 (FIG. 3) into unidirectional rotation of the output shaft 34 on which the cam 22 is mounted. Conversion mechanism 30
May be substantially similar to the conversion mechanism disclosed in this patent application and U.S. patent application Ser. No. 08 / 133,284 filed Oct. 8, 1993. Instead, the conversion mechanism 30
It may be substantially similar to the conversion mechanism disclosed in US Pat. No. 5,136,888.

The actuating handle 40 (FIG. 1) is provided with an input shaft 3 when the actuating handle 40 is pivoted about the same axis.
2 (FIG. 3) is fixed to the input shaft 32 so that it is rotated about its axis. The operating handle 40 is the conversion mechanism 30.
It can be swiveled by hand over the area of swivel movement between the front and rear limits, as limited by (FIG. 3).
In FIG. 2, the actuation handle 40 is shown in phantom at its front limit and in solid at its rear limit.

The binding tool 10 is equipped with a tension applying mechanism 50 (FIG. 1) for applying tension to the overlapping end portions of the steel strip 12. Except as illustrated and described herein, the tensioning mechanism 50 may be substantially similar to the tensioning mechanism used in known tying tools of the type described above.

The tension applying mechanism 50 includes a tension applying handle 5
4 is a knurled wheel 56 and a ratchet gear 5
The horizontal axis 52 when swiveled around the same axis with
It comprises a transverse shaft 52 to which a tensioning handle 54 is fixed so that (FIGS. 3 and 4) can be rotated about its axis. As shown in FIG. 1, a knurled wheel 56 and a ratchet gear 58 are rotatably coupled to each other, and a clutch (not shown) interposed between the ratchet gear 58 and the horizontal shaft 52. Is attached to the horizontal shaft 52 via a pawl (not shown) and the pawl (not shown) has knurled wheels 56 and The ratchet gear 58 and the knurled wheel 56 do not rotate when the tensioning handle 54 is rotated clockwise in the drawing so that the ratchet gear 58 can rotate with the horizontal shaft 52. Collaborate. The horizontal axis 52 is supported on two pivotable links, links 60 and 62, in a manner to be described later. The above-mentioned claw is operably attached to the link 62.

As shown in FIG. 3, the tying tool 10 includes a pair of longitudinally spaced similar recesses, namely a front recess 70.
And a longitudinally extending base 6 having a rear recess 72
The fixed structure including 8 is provided. A knurled pad 74 is mounted on the base 68. The fixing structure includes a frame 76 assembled from various parts and fixedly attached to the base 68 by fasteners (not shown) and standing upright from the base 68, and a frame 76 by fasteners (not shown).
And two side covers 78 fixed to 6. The output shaft 34 is supported by the frame 76. The lever 80 is attached to the link 60 at the flanged end 86 of the lever 80 by the fastener 82 and at the link 62 by the two fasteners 84 (FIG. 4). The links 60, 62 are pivotally movable with the lever 80 so as to be pivotally movable with the lever 80 over the area of pivotal movement between the links 60, 62 and the lever 80 in their normal position and their displaced positions. ) Is attached to the frame 76 so as to be rotatable. The pivot pin 88 defines a lateral axis. The links 60, 62 and lever 80 are shown in the normal position in FIGS. 2 and 3 and in the displaced position in FIG.

The links 60, 62 and the lever 80 are biased to the normal position in a manner to be described later. When the links 60, 62 and the lever 80 are installed in the normal position, the overlapping ends of the steel strip 12 (Fig. 1) are sandwiched between the knurled wheel 56 and the knurled pad 74 (Fig. 3). Therefore, the knurled wheel 56 abuts on the upper side of the overlap end,
On the other hand, the lower end of the overlapped end abuts on the knurled pad 74. When the tensioning handle 54 is swung, the knurled wheel 56 pulls the steel strip end that abuts the knurled surface of the wheel 56 and the other end of the steel strip 12 is Abuts the knurled pad 74 that prevents slipping, which
The steel strip 12 is tensioned.

A tension applying mechanism 50 for applying tension to the steel strip 12.
Further structural and functional details of the are outside the scope of the present invention. Tensioning mechanism 50, except as disclosed herein.
May be substantially similar to the tensioning mechanism used in known tying tools of the type described above.

As shown in FIGS. 4, 5 and 6, the overlapping ends are placed in the tool 10 to provide a series of meshable shoulders 18.
The holding / releasing mechanism 20 holds the overlap end so that it can be easily punched into the overlap end and releases the overlap end from the tool 10. The holding / releasing mechanism 20 includes a pair of longitudinally spaced latches. , Ie, the hooked end 102
And a front latch 100 having a cam end 104 and a rear latch 106 having a hooked end 108 and a cam end 110. Each latch has one fastener
A pivot bracket 112 (FIG. 4) secured to the base 68 (FIG. 5) by 14 (FIG. 4) and a hole in the pivot bracket 112 so as to be pivotally movable about a longitudinal axis defined by the pivot pin 116. And a pivot pin 116 extending through a hole in the latch and is pivotally mounted to the base 68.

The holding / releasing mechanism 20 further includes a cam member 120 which is an elongated blade member movably mounted on the frame 76 so as to be movable in the longitudinal direction between the forward movement position and the backward movement position. . The forward position of the cam member 120 corresponds to the capture position of the lever 80 and the closed position of the latches 100 and 106, and the retracted position corresponds to the released position of the lever 80 and the open position of the latches 100 and 106. The cam member 120 has two cam slots, a front slot 122 that houses the cam end 104 of the front latch 100 and a rear slot 124 that houses the cam end 110 of the rear latch 106. ing. Each of the cam slots 122 and 124 has a horizontal axis 52 as shown in FIG.
It has a horizontal portion extending toward (Fig. 5) and an inclined portion extending in the opposite direction. As shown in FIG. 6, the front slot 122 is closed at both ends, while the rear slot 124 (FIG. 4) is open at one end. The cam slots 122,124 provide cam ends for the latches 100,106 to pivot the latches 100,106 from a closed position to an open position during longitudinal movement of the cam member 120 from an advanced position to a retracted position. It cooperates with the parts 104 and 110.

As mentioned above, the transverse axis 52 (FIG. 1) is spaced from the transverse axis defined by the pivot pin 88 on which the links 60, 62 are mounted. The cam member 120 (FIG. 5) is located near the rear end 126 of the generally U-shaped pocket 13.
2 has an end 130 that defines, and the pocket 132 has
Opening upwards, the shaft 52 extends through the pocket.
The shaft 52 has a circular cross-section where it penetrates the pocket 132, which allows relative rotation of the shaft 52 and the pocket 132. End portion 13 of cam member 120
0 cooperates with the shaft 52 in such a manner that the shaft 52 moves the camming member 120 longitudinally from the advanced position to the retracted position upon pivoting of the lever 80 from the capture position to the release position.

The cam member 120 urges the links 60 and 62 toward the normal position via the horizontal shaft 52, and
It is biased toward the forward position so as to bias the lever 80 through the links 60 and 62 to the capture position. The camming member 120, which extends through the narrow slot 134 in the portion 136 (FIG. 5) of the frame 76, provides the longitudinal slot 14
0, the slot is closed at its front and rear ends, defining a relatively short tab 142 at its rear end and a relatively long tab 144 at its front end. Coil spring 150 disposed in longitudinal slot 140
Is guided on the tab 142 at the rear end of the spring 150 and abuts the frame portion 136 at the front end of the spring 150 to bias the camming member 120. Cam member 1
When 20 is fully propelled to the upper left as viewed in FIG. 5, long tab 144 enters the spring from the front end of spring 150.

When the lever 80 is manually pivoted from the capture position (FIG. 2) to the release position (FIG. 1), the links 60, 62 are
Is pivoted from the normal position to the displaced position so as to move the cam member 120 longitudinally from the advanced position to the retracted position, thereby causing the cam end 104,
110 cooperates with the beveled portions of cam slots 122, 124 by cam end 104 shown in solid lines in FIG.
Therefore, the latches 100, 106 are pivoted from the capture position to the release position.

When the lever 80 is released, the coil spring 150 tends to move the camming member 120 longitudinally from the retracted position to the advanced position, thereby causing the latch 1 to move.
The cam end portions 104 and 110 of the cams 00 and 106 are formed by the cam end portions 104 and 110 indicated by broken lines in FIG.
Co-operates with 2,124 horizontal sections. Therefore, link 6
0, 62 latches 100, so as to pivot lever 80 from the displaced position to the normal position and from the released position to the captured position.
It is swiveled from the displaced position to the normal position, as is swiveling 106.

Hooked end 102 of front latch 100 when latches 100, 106 are pivoted to the capture position.
Extends into the front recess 70 and the hooked end 108 of the rear latch 106 extends into the rear recess 72, thereby
The latches 100, 106 are arranged to retain the overlapping ends of the steel strip 12 between the latches 100, 106 and the base 68 and between the hooked ends 102, 108 and the frame 76. When the latches 100, 106 are pivoted to the release position, the latches 100, 106 are angularly displaced from the capture position and the hooked ends 102, 108.
Are removed from the recesses 70, 72, which causes the strip 1
The two overlapping ends can either be threaded into or removed from the tying tool 10.

Various changes may be made to the preferred embodiment described above without departing from the scope and spirit of the invention.

[0028]

As described above, according to the present invention, the overlapping ends of the steel strips are put into a binding tool and held, tension is applied, punching is performed with a punch, and then a meshing joint is processed. The holding / releasing mechanism that releases the end can be easily operated with one hand, which is convenient and has a high operating rate.

[Brief description of drawings]

FIG. 1 is a partial perspective view of a tying tool of the present invention used to mount a steel strip around a package.

FIG. 2 is a perspective view of the binding tool of FIG. 1 in a state where a steel strip is stretched and an operating handle is activated.

3 is a partially enlarged perspective view of the tying tool of FIG. 1 with some elements including one side cover and actuation handle removed to show internal details.

FIG. 4 is an exploded perspective view of some elements of a holding and releasing mechanism for receiving and holding and releasing overlapping ends of steel strip.

5 is an assembled perspective view of some of the elements of the retention and release mechanism of FIG. 4 after the mating joint has been formed in the steel strip.

FIG. 6 is a partial view of the cam member of FIG.

[Explanation of symbols]

 10 Bundling Tool 12 Steel Strip 16 Meshing Joint 18 Shoulder 20 Holding / Release Mechanism 40 Actuating Handle 52 Horizontal Axis 68 Base 70 Front Recess 72 Rear Recess 76 Frame 80 Lever 88 Axis Pin 100 Front Latch 102 End with Hook 106 Back Latch 108 End with hook 120 Cam member 122 Front slot 124 Rear slot 132 U-shaped pocket

Claims (7)

[Claims] 1. A loop of steel strip that extends around a package is attached to join the strips by a series of mating joints having stamped meshable shoulders at the overlap ends of the strips. In a tying tool, a fixing structure having a base extending in the longitudinal direction to define a recess and a frame standing upright from the base, and the overlapping end portion being inserted into the tool to hold the overlapping end portion. Holding and releasing mechanism for releasing the overlap end from the tool by holding the overlap end between the latch and the base and between the hooked end and the frame. A closed position from which the latch extends into the recess defined by the base and the lath from the closed position to place the overlap end within the tool and release the overlap end from the tool. The holding and releasing mechanism includes a latch movably mounted to the base such that the latch is biased to the closed position such that the latch is selectively movable to and from the open position. And the holding and releasing mechanism further comprises a moving device for moving the latch from the closed position to the open position. 2. A looped steel strip that extends around the package is mounted to join the strips by a series of mating joints having punchable meshable shoulders at the overlapping ends of the strips. In a binding tool, a fixing structure having a base extending in the longitudinal direction, a frame standing upright from the base, the overlap end part is put in the tool, and the overlap end part is held to hold the overlap end part. Holding and releasing mechanism for releasing the tool from the tool.
The release mechanism includes a latch having a hooked end such that the latch holds the overlapping end between the latch and the base and between the hooked end and the frame. Pivotable between an installed closed position and an open position that is angularly displaced from the closed position to place the overlap end within the tool and release the overlap end from the tool. A bundling unit pivotably mounted to the base such that the latch is biased to the closed position and the retention and release mechanism further comprises a pivoting device for pivoting the latch from the closed position to the open position. tool. 3. The tying tool according to claim 2, wherein the moving device pivots about an axis between a catch position corresponding to a closed position of the latch and a release position corresponding to an open position of the latch. A lever pivotably mounted to the frame so that pivoting of the lever from the capture position to the release position results in pivoting of the latch from the closed position to the open position. In an aspect, a tying tool in which the lever is coupled to the latch and the lever is biased to the capture position to bias the latch to a closed position. 4. The tying tool according to claim 3, further comprising a handle pivotably mounted to the frame so as to be pivotable over a region between a front limit and a rear limit of pivoting motion. The handle has a rearward limit of the area so that a user can then pivot the lever from the capture position to the release position by grasping the handle and the lever and tightening the lever toward the handle. A tying tool in which the handle is installed close to the lever when installed on. 5. The binding tool according to claim 4, wherein the holding / releasing mechanism has an advancing position corresponding to a catching position of the lever and a closing position of the latch, a releasing position of the lever and an opening position of the latch. Further comprising a cam member movably mounted to the frame so as to be movable in the longitudinal direction between the retracted position and the retracted position corresponding to The lever is coupled to the camming member in a manner to cause longitudinal movement of the camming member to the retracted position, the camming member biasing the lever to the captured position. Biased to an advanced position such that the camming member pivots the latch from a closed position to an open position during longitudinal movement of the camming member from an advanced position to a retracted position, and a retracted position. From the longitudinal direction of the cam member to the forward position A tying tool having a cam slot cooperating with the latch to pivot the latch from an open position to a closed position during movement of the. 6. The tying tool according to claim 5, wherein the axis around which the lever is pivotable is a horizontal axis, and the holding and releasing mechanism is spaced from the horizontal axis. Further comprising a lateral member arranged to move about the lateral axis when pivoting the lever about the lateral axis from an advanced position during pivoting of the lever from a capture position to a release position. A tying tool in which the cam member has another cam surface for cooperating with the cross member in such a manner that the cross member moves the cam member to the retracted position. 7. A looped steel strip is mounted around a package and joined by a series of mating joints having punchable meshable shoulders at the overlap ends of the strip. In the binding tool, a fixing structure having a base that defines a pair of recesses described in the longitudinal direction and a frame that stands upright from the base, and the overlapping end by inserting the overlapping end into the tool. Holding and releasing the overlapping end from the tool, the holding and releasing mechanism having a pair of latches with hooked ends, the latch including the latch A closure installed by the hooked end extending into a recess defined by the base to retain an advancing overlap end between the base and between the hooked end and the frame. Said position being pivotable between a position and an open position angularly displaced from said closed position for inserting said overlap end into said tool and releasing said overlap end from said tool. A tying tool which is pivotally mounted to a fixed structure, wherein the latch is biased to the closed position and the retaining and releasing mechanism further comprises a device for pivoting the latch from the closed position to the open position.